Free Work Hours Calculator
Add up hours worked and calculate pay.
What is the Work Hours Calculator?
Adding up a week's hours from a time card is deceptively annoying — minutes don't divide by 100, breaks come off the total, and a night shift that crosses midnight breaks the simple subtraction entirely.
This work hours calculator does the arithmetic for you: enter your times and breaks, and it totals your hours and, if you like, your pay.
Last updated: Aug 14, 2026
What does this tool do?
You enter a start time, end time and break for each day, and it calculates the hours worked per day.
It sums the week into a total in both decimal hours and hours-and-minutes, and can multiply by an hourly rate to estimate pay.
Key features
Per-day and total
Hours for each day and the week.
Break deduction
Subtracts unpaid break minutes.
Overnight shifts
Handles shifts crossing midnight.
Pay estimate
Optional hourly-rate calculation.
Private
Runs in your browser.
Example
Common use cases
- Hourly workers — Total a week's hours.
- Freelancers — Tally billable time.
- Managers — Check timesheets quickly.
- Shift workers — Handle overnight hours.
- Small business owners — Estimate payroll hours.
- Contractors — Sum hours for an invoice.
- Students with jobs — Verify a paycheck.
- Anyone on a time card — Skip the manual math.
Benefits
- It converts messy minutes into clean totals.
- It handles breaks and overnight shifts correctly.
- It estimates pay from an hourly rate.
- It keeps your hours private on your device.
Tips
- Enter times in 24-hour format so morning and evening are unambiguous.
- Put unpaid breaks in minutes; leave it 0 for paid breaks.
- For an overnight shift, just enter the real end time — it's handled.
- Decimal hours (7.5) are what payroll usually wants; the h/m view is for reading.
- Add a day row for any extra or split shift.
- Double-check the rate currency matches your expectation.
- Keep your own record too — this doesn't save between visits.
- Round according to your employer's policy if they require it.
Common mistakes to avoid
Confusing decimal hours with minutes
Fix: 7.5 hours means 7h 30m, not 7h 50m. The tool shows both to avoid this.
Forgetting to deduct breaks
Fix: Enter unpaid break minutes so the total reflects actual worked time.
Mis-entering an overnight shift
Fix: Enter the true start and end times; the tool adds a day when end is before start.
Mixing 12- and 24-hour times
Fix: Use 24-hour format consistently so times aren't ambiguous.
How it works
- 1
Enter times
Start, end and break per day.
- 2
See hours
Per day and total, live.
- 3
Add a rate
Optionally estimate your pay.
Frequently asked questions
Yes. If the end time is earlier than the start time, it treats the shift as crossing midnight and calculates correctly.
Yes. Enter an hourly rate and it multiplies your total hours to estimate pay.
Yes. If the end time is earlier than the start time, it treats the shift as crossing midnight and calculates correctly.
Yes. Enter an hourly rate and it multiplies your total hours to estimate pay.
7.5 decimal hours equals 7 hours 30 minutes. Payroll usually uses decimal hours; the h/m view is easier to read.
Enter unpaid break minutes for each day and they're subtracted from that day's total.
No. It runs in your browser for the session; keep your own record if you need it later.
No. All calculations happen in your browser.
Conclusion
A work hours calculator turns a week of clock-in and clock-out times into an accurate total and pay estimate. Pair it with the time duration and salary calculators for the rest of your time-and-money math.